NET1- Network slicing

Tuesday, 19 June 2018, 11:30-13:00, E2 hall
Session chair: Jordi Perez-Romero (Universitat Politècnica de Catalunya (UPC), Spain)


11:30 – 5GTANGO: A Beyond-MANO Service Platform

Carlos Parada and Jose Bonnet (Altice Labs, Portugal); Eleni Fotopoulou (Ubitech Ltd, Greece); Anastasios Zafeiropoulos (UBITECH & National Technical University of Athens, Greece); Evgenia Kapassa, Marios Touloupou and Dimosthenis Kyriazis (University of Piraeus, Greece); Ricard Vilalta (CTTC/CERCA, Spain); Raul Muñoz, Ramon Casellas and Ricardo Martinez (Centre Tecnològic de Telecomunicacions de Catalunya (CTTC/CERCA), Spain); George K Xilouris (NCSR Demokritos, Greece)
Unlike previous generations, 5G will be more than just a mobile network. 5G will have broader coverage, including humans, but also cars, robots, and things in general; and will target verticals like eHealth, Automotive, or Industry 4.0, just name a few. To deal with this, 5G will need to be faster, more efficient, reliable, flexible, agile, and, at the same time, cost less. For this to be possible, 5G has to engage with the best-of-breed of the emerging technologies, where NFV is definitely in the top list. ETSI NFV is today in an advanced stage of standardization. In particular, many MANO platforms are today available, with different levels of development, varying on the number of features and maturity levels. In this context, this paper describes the 5GTANGO Service Platform, an open source MANO framework currently under development in the scope of the 5GTANGO H2020 project, and whose main developments started in a previous H2020 project named SONATA. In particular, some features that go beyond the state-of-the-art are approached, either considering standardization or implementations available. Those features are Policy, SLA and Slicing.



11:48 – The Creation Phase in Network Slicing: From a Service Order to an Operative Network Slice

Jose Ordonez-Lucena, Oscar Adamuz-Hinojosa, Pablo Ameigeiras, Pablo Muñoz and Juan J. Ramos-Muñoz (University of Granada, Spain); Jesus Folgueira Chavarria (Telefonica, Spain); Diego Lopez (Telefonica I+D, Spain)
Network slicing is considered a key mechanism to serve the multitude of tenants (e.g. vertical industries) targeted by forthcoming 5G systems in a flexible and cost-efficient manner. In this paper, we present a SDN/NFV architecture with multi-tenancy support. This architecture enables a network slice provider to deploy network slice instances for multiple tenants on-the-fly, and simultaneously provision them with isolation guarantees. Following the Network Slice as-a-Service delivery model, a tenant may access a Service Catalog, selecting the network slice that best fits its needs and ordering its deployment. This work provides a detailed view on the stages that a network slice provider must follow to deploy the ordered network slice instance, accommodating it into a multi-domain infrastructure, and putting it operative for tenant’s consumption. These stages address some critical issues identified in the literature, including (i) the mapping from high-level service requirements to network functions and infrastructure requirements, (ii) the admission control, and (iii) the specific information a network slice descriptor should have. With the proposed architecture and the recommended set of stages, network slice providers can deploy (and later operate) network slice instances with great agility, flexibility, and full automation.



12:06 – On the Automation of RAN Slicing Provisioning and Cell Planning in NG-RAN

Ramon Ferrús and Oriol Sallent (Universitat Politècnica de Catalunya, Spain); Jordi Pérez-Romero (Universitat Politècnica de Catalunya (UPC), Spain); Ramon Agustí (Universitat Politècnica de Catalunya, Spain)
Network slicing is a fundamental feature of 5G systems that facilitates the provision of particular system behaviours adapted to specific service/application domains on top of a common network infrastructure. While significant progress has already been achieved at specification level by 3GPP with regard to the functional support of network slicing in 5G, management solutions for the exploitation of these capabilities in the NG-RAN are still at a very incipient stage. In this context, this paper firstly presents a functional framework for the management of network slicing for a NG-RAN infrastructure, identifying the necessary information models and interfaces to support the dynamic provisioning of RAN slices. On this basis, the feasibility to automate the provisioning of RAN slices is discussed. Furthermore, a self-planning and dimensioning solution is presented to illustrate how a traditional network management process such as planning is expected to evolve to cope with the new challenges associated with RAN slicing management.



12:24 – Profit-Aware Resource Allocation for 5G Sliced Networks

Sunday Oladejo and Olabisi Emmanuel Falowo (University of Cape Town, South Africa)
In this paper, we investigate the radio resource allocation for the 5G Sliced Network from the perspective of the network profit. Based on the quality of service requirements of the different network slices case, a Profit-Aware Resource Allocation (PARAA) is proposed. The Power-Bandwidth rule is employed in the cost estimation, while the optimization problem is formulated as a Mixed Integer Non-Linear Problem (MINLP) and the Binary Particle Swarm Optimization (BIPSO) is used to solve the profit resource allocation problem. In respect to this, the performance of the algorithm is investigated via intensive Monte-Carlo based simulations taking into consideration the effect of coverage radius, the number of users per slice and the allocated transmit power of each user.



12:42 – 5GaaS with SDN-based UPF for Mobile Backhaul Network Slicing

Jose Costa-Requena (Aalto University, Finland)
A major challenge in future mobile networks is how to fulfil the requirements set for 5G networks in terms of latency and throughput. 3GPP has defined a new architecture based on virtualization and Software Defined Networks (SDN) to deploy network slices that can fulfil those requirements. In this paper, we present the first realization of the new 5G user plane function (UPF) component that supports SDN and provides optimized transport for reducing latency as required in 5G networks. The proposed UPF is the cornerstone for using different data transport strategies adapted to the needs of different verticals, such as Ultra Reliable Low Latency Communications (URLLC) services that require a separate network slice that provides an optimized transport for URLLC applications. The paper also discusses how a proper migration from legacy 4G user plane to 5G UPF, so as to ensure a reasonable a transition phase on the path to 5G. In doing so, the objective is not to meet short-term needs but to fulfill the future latency and throughput requirements of emerging applications, and also to provide first performance results of UPF in a real testbed environment.